Re: [PATCHv7 00/14] mm, x86/cc: Implement support for unaccepted memory
From: Dave Hansen
Date: Fri Jun 24 2022 - 13:10:05 EST
On 6/24/22 10:06, Marc Orr wrote:
> I think Peter's point is a little more nuanced than that. Once lazy
> accept goes into the guest firmware -- without the feature negotiation
> that Peter is suggesting -- cloud providers now have a bookkeeping
> problem. Which images have kernels that can boot from a guest firmware
> that doesn't pre-validate all the guest memory?
Hold on a sec though...
Is this a matter of
can boot from a guest firmware that doesn't pre-validate all the
guest memory?
or
can boot from a guest firmware that doesn't pre-validate all the
guest memory ... with access to all of that guest's RAM?
In other words, are we talking about "fails to boot" or "can't see all
the RAM"?